Transmitter for printing-telegraph systems.



, J. E. WRIGHT.

. A TRANSMITTER FOR PRINTING TELEGRAPH SYSTEMS. 1,090,368.

APPLIGATION FILED JAN.22,1913.

Patented Mar. 17, 1914.

SHEETS-SHEET 1.

J. E. ,mmm TRANSMITTER PGR PRINTING TBLBGEAPH SYSTEMS. APPLIoATIox HLBD 1,511.22, 17913.

patented Mar. l?, 1914.

5 SHEBTSTSHHEET 2.

Y J; B. WRIGHT. TRANSMITTER POB PRINTING TELEGRAPH S'YSTEMS.

A APPLICATION FILED JAH. 22, 1913. 1,090,368. Patented Mar.17,1914

5 SHEETS-SHEET 3.

' Melitn J. E., WRIGHT. TRANSMITTER FOR PRINTING TBLBGRAPH SYSTEMS.

APPLIUATION FILED JAN. 22. 1913.

1 ,090,868. Patented Mar. 17, 1914.

5 SHEETS-SHEET 4.

img@ l@ v ga' it N L mlllmlfuuirm v unan-:8353L I I v t y l v I I( ENTQR W l y M@ I TTURNEYJ" J. E. WRIGHT.

I TRANSMITTER POR PRINTING TBLEGEAPH SYSTEMS.

APPLICATION FILED JAN.22,1913.

6 SHEETS-SHEET 5.

I w hmmm w WITNESSES JOHN EDWARD WRIGHT, OFA PITTSBURGH, PENNSYLVANIA, ASSIGNOR T0 'WItIIIGUElIL TELEGRAPHIC TYPEWRITER COMPANY, 0F NEW YORK, N. Y., A CDR'PGRATION 0F DELAWARE.

TRANSMITTER F013,` PRINTING-TELEGRAPH SYSTEMS.

Specification of Letters Patent.

Patented Mar. ia, 1era.

Application filed .Tann-ary 22, 1913. Serial N o. 743,512.

E. WRIGHT, a

, "for patent,'is`"an improvement in apparatus [for use in a printing or equivalent telegraph system in which, by the-manipulation of Vsuitable keys, either directly or by means of a perforated tape, signals according to a given code correspondingto. letters, 'gures and other characters, are transmitted over a line to receiving devices by means of which the characters are printed or displayed.

In an application led by vme on Decembeij 9th, 1912, Serial No.7735,682,1 have shown a printing telegraph receiver in which the selection and printing of characters, spacing, paper-feed and such other functions as are involved in the operation fof a column-printing4 telegraph instrument, are

'effected by means of electromagnetic devices, each having -its special function and y connected up with a plurality of' circuits local to the instrument, in such manner that each particular operation or series of certain opsuch printer an apparatus which I designate as a translator and which is an instrument placed intermediate to the receiver and the. lineand containing a number of controlling' circuits corresponding t0 those in the receiver, .and line controlled circuits as few in number as practical working conditions will permit. Byr means of current impulses received, in one or more of the line controlled circuits in this'instrument, that one of a plurality of circuit closers is selected which v' completes thereceiver circuit and prints the character or effects the operation correspondingto-the special signal impulse or fco'mbination of Vimpulses transmitted over atv paratus the subject of `an application filed of even date herewith Serial No. 743,511-,

The improvement upon which my present application is basedI was designed as that part of the special system' involving the two devices abovereferred to, which transmits current impulses over a single line wire and distributes them in proper time relation to the appropriate line controlled circuits of the translator, and for a more readyr understanding of its nature and purpose, 1t will be described as the transmitter element of that particular system. I donot, however, limit myself to such use, for the apparatus, as will be readily understood by those yskilled in the' art, is applicable generally to any telegraphic system in which its peculiar functions play `a necessary or desirable part in the 'attainment `of the ultimate result.

' The apparatus may. be described in .very

general terms as composed of two sunflower disks at opposite ends of a transmission line a-nd adapted to operate in unison, but the particular features of novelty which characterize my invention, reside in the means devised and employed for securing the proper synchronism and for otherwise controlling the apparatus in its operation, particularly with reference `to ,the other elements in the system, Vfor which reason I describe the imrovements by reference to the accompanying drawings.

Figure l is a' front vview in elevation of that part of the apparatus which is used at the transmitting station. Fig. 2 is a ver- '.tical section on line afs-o, of Fig. 1, viewed from the left. Fig. 3 is a similar section on line b-b of Fig. 1. Fig. 4 is a broken section on line c-c of Fig. l, viewed-from the right. Fig. 5 is a section on line e-c of the same ligure, viewed from the left. Fig. 6 is `a sectional detail on line decl' ofFig. l.

Fig. 7 is a side view in elevation of an attachment shown at the extreme left of Fig. 1. Fig. 8 is a top plan view of the device shown in Fig. l. Fig. 9 is a Airont view in elevation of that part of the apparatus which is used at the receiving station. Fig. 10 is a diagram of circuit connections.

Referring to Figs. 1 to 7 which illustrate sents a bed plate supported by legs 2 upon Y'thedine."y l have made'. this last named apfwhich all the parts are secured. On the sending portions of the apparatus, 1 repre-I f therefore, by the'rotation of the shaft these which` continues until the pawl 15 again en- 4, the standard 17 is mounted at the end of gagement of the pawl 22 withl the notch upper side of the base plate 1 are two standl ards 3 affording bearings for a shaft 4, carrying a loosely mounted sleeve 7 integral with a' gear wheel 5 which latter meshes with 5 a pinion mounted in afstandard fixed in the 1 base plate, and through which power tog rotate the sleeve and gear wheelis trans mitted from any suitable motor which. in the operation of the device, is designed t0 run continuously. Adjacent to the end of sleeve 7 there is rigidly fixed to the shaft 4, a sleeve 8, from which project, at substantially right angles, two arms 9 and 10. In one of said arms, as 9, near its end is journaled a short shaft 11 carrying at one end a pinion 12 that engages with a gear wheel 13 fixed to sleeve 7, and at the other end a ratchet wheel 14. To the other arm 10 and near its base is pivoted a bell crank lever 15 connected by a spiral spring. 16 to the arni 9 and operating under thc infiuence of sai y spring as a pawl for the ratchet wheel 14, to lock the sleeve 7 to the shaft, when in engagement therewith. Into the path of the free end or arm of the pawl 15, projects through a standard 17, a slide rod- 18, pivotally connected to the upper end ot a lever 19 which extends through a slot in the base plate 1 and is pivoted to a stud 20 fixed to said plate. A spiral spring 23 connected to lever 19 and to the standard 17, maintains the end of the rod 18 normally across the path oiiend of pawl 15. When,

two parts are brought forcibly into engagement, the pawl is lifted from the teeth of the ratchet, leaving the sleeve 7 free to revolve upon the shaft 4. A1 notched cam disk 21 upon which slides a spring pawl 22 is fixed to shaft 4 in such position that coincidentally with the release of pawl 15, the pawl 22 slips into the notch and locks the shaft against backward movement. Be neath the base plate 1 is secured an'electromagnet 24, having,r an arm 25 extending from its armature and which, when the magnet is energized engages the lower projecting end of the lever 19 and withdraws the end of the slide rod 18 from engagement with the pawl 15. This operation restablishes connection between the sleeve 7 and shaft 4,

counters the rod 18. As the spring 16 is under slight tension at the instant of enin cam disk 21 even an instantaneous withdrawal of the rod 18 releases the pawl and allows it to rotate sufficiently toprevent the return of the rod.18 to its forward position until after the pawl has passed beyond it.

partsand to 4cushion the impact between the arm of pawl 15 and the slide rod 18, which results from the rapid rotation of the shaft a plate or bar 3l pivoted at the other end i projects beyond its bearing` in standard 3,"

a split brass sleeve 25 integral with a contact disk is secured by a strap 27. The

outer side of thel disk 2.( 3 is faced with vulV .canlte and carries a Contact arm 28 1n electrical connection with the sleeve and disk, the end of which arm is arranged to sweep over a stationary sunflower ring 29, coniposed ot alternate insulating and conducting segments ,and rigidly mounted on a standard 30. vit the receiving end of the line an instrument is used which is or may he, in the particulars above enumerated anddescribed, of identically the same construetion as that at the sendingr end. This in strument isillustratedin Fig. 10, and the parts corresponding to those which have been described in connection with the sending device are indicated by the same reference numerals, but to eaclry of which is atiixed the exponent a v. .Those details of construction which distinguish the two instruments will ybe pointed butin connection with the Adescription of operation;

Tn the practical operation of systems ot this kind local receiving vas well as transmitting instruments, as 'is well known are always used, and the impulses are relayed instead of ,beingsent directly to line. As these, however, have to do with the working of the system and not with the particular functions of the apparatus in which my invention resides and are all well understood by those skilled in the art, I shall omit, for purposes of illustration, all 'such devices and assume that `lthe current impulsesy are sent directly to line through the sunflower circuits and a cohtact spring or brush 34 bearing against the conducting side of the disk 26 of the transmittin sunflower, and are received directly from ine by the corresponding brush 34a in the receiving sun- Hower.

To adapt the instrument to such uses as above indicated, it is provided with a numher of terminals, placed, most `conveniently on the base'platein the rear of the working parts, and of whichthose indicated by the letters A to K inclusive, are designed for connection with circuits from a' keyboard, whose office it is to cbntrol the operation of the device and to Set u the 'combinations of contacts that result in the transmission- This particular circuit, however, is used for the special purpose of operating a polarized' relay and may be left out of present consideration the segment a7 beingregarded as a blank, as is also the corresponding segment 47 in the 'receiving sunflower. Let it be assumed that the keyboard or any other suitable device is operated to send one or more impulses constituting a signal corresponding to a given character. The first result of such operation must always be to send through the circuit of terminal J to ground, 'a momentary current impulse that energizes .the magnet 24 and releases the shai't 4 which, assuming the sleeve 7 to be in continuous rotation, instantly starts and makes one complete revolution. Let it be further assumed that by the same operationof the keyboard, battery is always connected at once to terminal G. The path from this terminal will be seen to lead to segment 48 and hence an impulse will be sent to this segment, brush 28 and brush 34 to line. The normal position of the receiving sunflower, as indicated by the diagram, is that in which its rotating arm 28 rests upon segment 48A, so that the first impulse received by its brush 34g will be through that segment and hence through the shaft releasing magnet 24 to ground. The

receiving sunflower will thus be started,l

and its shaft permitted to make one revolution. Let it be further assumed that by the same operation of the keyboard, battery is connected to one or more of the terminals, say, that numbered B, which is connected e to segment 50, and E, which is connected to segment 53. From this it will result that a current impulse will be sent to line during the passage of the brush 28 over each of these segments and will be received by the distant suniiower over corresponding seg ments which are designed to be connected through terminals p, (j, 1', s, t and u, to the line controlled circuits of the translator. to which reference has been made above. Thus according to the battery connections established by the keyboard to terminals A, B,-

C, D, E, F and'Gr, signals or groups of im pulses corresponding thereto, will be sent to line and distributed through the corresponding circuits of the receiving sunflower, and as both of said instruments are started and stopped at the unison point for each com4 plete signal, the synchronizing of the instruments is greatlv simplied. VIn fact;` their respective speeds may manifestly differ to a considerable extent Without interfering With their correct coperative performance.

In the partlcular system for which. the above described instruments are designed,

seul-rent impulses sent through segments 49,

50, '51, 52 and 53 and received through the corres riding se ents ofthe receiving sunpo te operate selecting lator that effects, through the control of suitable mechanism, a shifting of the typewheel of the printing mechanism through one character space. By means of the devices thus far described, however, those op erations only which are involved in the establishment ofthe desired permutations and combinations in the controlling mechanism are performed. It remains, therefore, to describe those devices which render these combinations edective in bringing about their intended result.

On shaft l of the sending sunflower, see Figs. 1 and 3, is mounted a cam disk 55 against theedge of which bears a spring actuated lever 56, provided at its end with an anti-friction roller 57 The'lever 56 carries a contact spring 58, which at a given point in the rotation of the shaft 4 is forced into contact with a stop 59 to complete a circuit. The' counterpart of this device is present in the receiving sunflower as shown in Fig. 9, and in the latter it operates to close the circuit from a battery' 60, repre senting any local source ofcurrent, through wire 61 yto terminal 'u which is designed to be extended through the circuit including the release or main operating magnet of thel translator. The high point of the cam does not encounter the lever 56 until after the shaft 1l has so far completed a revolution that all of the segments of the sunflower have done their Work and the desired adjustment of the translator has been established thereby. In the transmitting instrui available source of current GQ to a terminal L, from which the proper connection to the local. translator may be restablished. 0n the shaft of the sending sunflower instrument there is also a cam disk 6l that operates a. circuit closer 65A controlling a circuit from the battery 62 to terminal I. The cam is of such shape and so secured to the shaft 4 that itvvill be operated to close this circuit imme diately after the shaft has started in rota tion and is designed to control the action of the keyboard or its equivalent, by locking, through the instrumentality of an electro magnet, the depressed key down and the other keys up, until the shaft 4 haspractically completed one full revolution. This mutual control of the two instruments prevents an opera-tor from sending one signal before another has been completed.

There is a third circuit closer in the sending instrument whichmay comprise a cam disk and circuit controller lever of the saine construction and mode of operation as those litt iin i just described, but which, in the drawings, see Figs. 1 and 7, is shown as comprising a cam disk 66. secured to the end of shaft l and a spring actuated contact lever 67 bearing thereon] and 'pivoted to an insulating plate 68, secured to base plate 1. When this lever 67 is depressed b y the cam it is forced into engagement with a spring contact 69 to complete a circuit from battery 62 to terminal K. The said terminaLis connected with a circuit in the keyboard instrument which is designed to include an electromagnet that must operate 'before current can be sent through the contacts selected by the Adepression of any given key. This arrangement is not illustrated herein as it forms no part of the present invention, but is referred to in illustration of the feature of the instrument which is subject of the present application and which consists in the combination of circuits from the beyboard to the sunflower and circuits from the sunflower to the keyboard and through the instrumentality of which the mutual control of the two instruments is effected. In other words as has been described above the keyboard starts the sunflower in operation and the latter thereupon establishes conditions in the keyboard which permit it to exercise its allotted functions and prevent it from effecting any other operation until these have been completed.

In certain obvious respects the invention as hereinbefore described, is not limited to the details of construction and arrangement ladopted for convenience or illustration.

For example, lin sunflower instruments lof the general character described, it is possible to rotate either the brushes or the contact rings, and it is usual, for this reason,

`to refer to the operations of such instrumentsas revolutions of the sunflower. The most characteristic feature of the improvement, however, is that the two sunflower instruments shall start from rest and complete one revolution or cycle of operations in substantial synchronism for each signal transmitted,`v the release of one being effected by a current impulse transmitted b v the initial movement of ythe other.

What I claim is 1. A transmitting apparatus for printing telegraph systems, comprising in combination the following elements; sunflower instruments with corresponding contact ments and at opposite ends of a line; means for .operating the same which are normally locked; circuits in both instruments and releasing means operated thereby for permitting the shafts to make one revolution, the releasing'circuit of the sending instrument beingr a-keyboard controlled circuit independent of the sunflower circuits and that -in the receiving instrument being connected with the first contact segment to receive current from line,

flower, and a circuit including the last namedl releasing means directly connected with that contact segment of the rece1v1ng sunflower which is first to receive current transmitted by the initial movement of the sending sunflower on the release and operation of the same.

3. A transmitting apparatus for printing telegraph systems, comprising inY combination, two normally locked sunflower instruments having corresponding segments and at opposite ends of a line, means for releasing the sending instrument to make one revolution, and electrically controlled means for' the same purpose in the receiving instrument, and a circuit, including said releasing means, connected directly with that contact segment which is first to receive current transmitted by the initial movement of the sending sunflower on the release and operation of the same. y

4. In a transmitting instrument for printing telegraph systems, the combination with the sunflower ring and rotatable shaft of the sending apparatus, of a series of keyboard controlled circuits one for starting the sunflower in operation and the others connected to sunflower segments for sending impulses to line, keyboard controlling circuits andl `circuit controllers therein adapted to be operated by the movement of the sunflower shaft.

5. Ina transmitting instrument for printing telegraph systems, the combination with the sunflower ring and rotatable shaft of 4the sending apparatus, of a series of keyboard controlled circuits connected with the sunflower segments, a keyboard controlled circuit and a releasing device for the sunflower operated thereby, keyboard controlling circuits and circuit controllers therein,

and cams on the sha-ft of the sunflower for operating said circuit controllers.

6. The combination with a rotatable shaft and a power driven sleeve. of means for' locking the sleeve to the shaft and releasingit therefrom, consisting of a pinion and a ratchet wheel on a spindle carried by the shaft and eccentric thereto, the said pinion meshing the sleeve, a spring actuated pawlv also carried by the shaft and adapted to engage with the ratchet, a movable stop in the path of the pawl and means for preventing backward movement of the shaft from itsr means forl IlockingI the sleeveV to,.and relaas-1' lng it from the shaft, consisting of e. pinion i preventing backwt fd movement of the shaft if and ratchet wheel on e spindle carried by l from its point of release; the shaft and eccentric thereto, the said In testimony whereof I affix my signature pinion meshing with the sleeve, a spring in the presence of two subscribing Witnesses. actuated pawl also carried by the shaft and JOHN EDWARD WE1-@Hm adapted to engage with the ratchet, 'a spring l seated stop in the path of the pawl, means Witnesses:

for withdrawing said stop to permit the M. LAWSON DYER, shaft to make one revolution and means for i, WM. BOHLEBER. 

